ReadyLIFT 6" COIL SPRING LIFT KIT Operating instructions

Brand: ReadyLIFT

Model: 6" COIL SPRING LIFT KIT

Type: Operating instructions

www.ReadyLIFT.com - Phone: (877) 759-9991

49-23620-IM-AA

(877) 759-9991

MON-FRI 7AM-4PM PST

EMAIL: support@readylift-ami.COM

WEBSITE: ReadyLIFT.COM

**Please retain this document in your vehicle at all times.**

IF your ReadyLIFT® product has a damaged or missing

part, please contact customer service directly and

a new replacement part will be sent to you immediately.

For warranty issues, please return to the place of

installation and contact ReadyLIFT.

Limited Lifetime Warranty

This unique product warranty proves our commitment to the quality and reliability of every product that

ReadyLIFT manufactures. The ReadyLIFT product warranty only extends to the original purchaser of any

ReadyLIFT product, if it breaks, we will give you a new part. Warranty does not apply to discontinued parts.

Our Limited Lifetime Warranty excludes the following ReadyLIFT items; bushings, bump stops, ball joints, tie

rod ends, heim joints and shock absorbers. These parts are subject to wear and are not considered defective

when worn. They are warranted for 12 months from the date of purchase for defects in workmanship.

This product warranty is voided if the vehicle is not aligned after kit installation and proper maintenance is

routinely done.

Product purchased directly from ReadyLIFT has a 90 day return policy on uninstalled products from the date

of purchase (may be subject to restocking fee). Uninstalled product returns must be in the original Ready-

LIFT packaging. Please call (877) 759-9991 to get an RGA# for any return. Customer is responsible for

shipping costs back to ReadyLIFT. Returns without RGA# will be refused. Contact ReadyLIFT directly

about any potentially defective parts prior to removal from vehicle.

ReadyLIFT products are NOT intended for off-road abuse. Any damage or failure as a result from off-road

abuse voids the warranty of the ReadyLIFT product. ReadyLIFT is NOT responsible for any subsequent dam-

ages to any related vehicle parts due to misuse, abuse, improper installation, or lack of maintenance. Fur-

thermore, ReadyLIFT reserves the right to change, modify or cancel this warranty without prior notice.

49-23620 2023-UP Super Duty 6” Lift w/ Radius Arm Drops

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READ INSTRUCTIONS THOROUGHLY AND COMPLETELY BEFORE BEGINNING INSTALLATION.

INSTALLATION BY A CERTIFIED PROFESSIONAL MECHANIC IS HIGHLY RECOMMENDED.

READYLIFT® IS NOT RESPONSIBLE FOR ANY DAMAGE OR FAILURE RESULTING FROM IMPROPER INSTALLATION.

Safety Warning

MISUSE OF THIS PRODUCT COULD LEAD TO INJURY OR DEATH.

Suspension systems or components that enhance the on and off-road performance of your vehicle may cause

it to handle differently than it did from the factory. Extreme care must be used to prevent loss of control or

vehicle rollover during abrupt maneuvers.

Always operate your vehicle at reduced speeds to ensure your ability to control your vehicle under all driving

conditions. Failure to drive safely may result in serious injury or death to driver and passengers.

Driver and passengers must ALWAYS wear your seat belts, avoid quick sharp turns and other sudden maneu-

vers. ReadyLIFT Suspension does not recommend the combined use of suspension lifts, body lifts, or other

lifting devices.

You should never operate your vehicle under the influence of alcohol or drugs.

Constant maintenance is required to keep your vehicle safe. Thoroughly inspect your vehicle before and after

every off-road use.

It is the responsibility of the retailer and/or the installer to review all state and local laws, with the end user

of this product, related to bumper height laws and the lifting of their vehicle before the purchase and installa-

tion of any ReadyLIFT products.

It is the responsibility of the driver/s to check their surrounding area for obstructions, people, and animals

before moving the vehicle.

All raised vehicles have increased blind spots; damage, injury and/or death can occur if these instructions are

not followed.

Installation Warning

All steps and procedures described in these instructions were performed while the vehicle was properly sup-

ported on a two post vehicle lift with safety jacks.

Use caution during all disassembly and assembly steps to insure suspension components are not over extend-

ed causing damage to any vehicle components and parts included in this kit.

Included instructions are guidelines only for recommended procedures and are not meant to be definitive.

Installer is responsible to insure a safe and controllable vehicle after performing modifications.

ReadyLIFT Suspension recommends the use of an OE Service Manual for model/year of vehicle when disas-

sembly and assembly of factory and related components.

Unless otherwise specified, tighten all bolts and fasteners to standard torque specifications listed within the

OE Service Manual.

Suspension components that use rubber or urethane bushings should be tightened with the vehicle at normal

ride height. This will prevent premature wear or failure of the bushing and maintain ride comfort.

Larger tire and wheel combinations may increase leverage on suspension, steering, and related components.

Due to payload options and initial ride height variances, the amount of lift is a base figure. Final ride height

dimensions may vary in accordance to original vehicle ride height. Always measure the vehicle ride height

prior to beginning installation.

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IMPORTANT NOTE:

This suspension system was developed using a 37” x 12.5” tire with 20” x 9” wheel

and a offset of +18mm. If wider tires are used, offset wheels may be necessary and

trimming may be required. Factory wheels can be used but are not recommended

with tires over 11.5” wide.

The stock spare rim can be run in an emergency - exercise extreme caution under

stock spare tire operating conditions. Please note that, if running the spare factory

tire, it is done for short distances and a speed not to exceed 45mph or damage to dif-

ferentials may occur.

A lifted vehicle may have different headlight aim performance. ReadyLIFT recom-

mends marking and recording the headlight beam position before kit installation and

then adjusting, if necessary, the headlamps to the same height settings after kit in-

stallation. Set the vehicle on a level surface 10' to 15’ from a solid wall or garage

door. (This is a general distance with some manufacturers requiring different distanc-

es.) Note the top height of the low beam's bright spot, the top of the most intense

part of the beam, for driver and passenger side. Height may vary from side to

side. Repeat this procedure and adjust after lift kit is installed. Adjust if the aim is off

by turning the adjusters gradually (a quarter of a turn) and looking to see where the

new alignment falls. It may be easier to block one headlamp while adjusting the oth-

er. Consult the owner operation manual for procedures to adjust headlights - many

automakers offer headlight aiming specs. Some states have their own specifications

when it comes to headlight aim, so it’s best to follow those rules when alighting head-

lights.

IMPORTANT NOTE:

The lift blocks in this kit are not designed to work with aftermarket or factory add on

air spring/load leveling kits that attach to the bump stop tangs. Use of this type of air

bag system will void all block warranties and can cause failure of the block bump stop

tang.

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VEHICLE RIDE HEIGHT MEASURMENTS

Measure from the fender edge to the axle hub center

Factory front axle Factory rear axle

ReadyLIFT target ReadyLIFT target

After Lifted After Lifted

Driver

Before

Driver

After

Passenger

Before

Passenger

After

RECORD HEAD LAMP MEASURMENTS

Pre Installation Measurements

It is imperative that you record the following measurements and factory components.

ReadyLIFT test and records as much data from each application as possible. Vehicle

manufactures may change components or add models with different options. By re-

cording and not exceeding the fender to hub center that ReadyLIFT call out will en-

sure the lift on your vehicle is correct. This measurements and components will effect

the completion of this lift kit. Failure to do so may result in over lifting, causing prem-

ature failure of axles, CV boots and drivetrain. Over lifting a vehicle will also result in

a incorrect wheel alignment. This will prematurely wear tires on the inside or outside

edges. Incorrect alignment will cause poor vehicle handling issues such as under

steer. Over lifting will also cause a shock top off condition, which may create poor

ride quality, damage the vehicle, introduce noises like clunks, and will prematurely

wear key components. Failure to adjust head lamps may cause dangerous driving

conditions for you and other drivers on the road. Record the head lamp position be-

fore the installation of this lift or leveling kit and adjusting to factory position after the

completion will ensure a safe and enjoyable experience.

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BILL OF MATERIALS

Before starting installation:

ReadyLIFT Suspension highly recommends that the installation of this

product be performed by a professional mechanic with experience working on and installing suspension

products. Professional knowledge and skill will typically yield the best installation results. If you need an

installer in your area, please contact ReadyLIFT Suspension Customer Service to find one of our “Pro-

Grade” Dealers.

INSTALLATION BY A PROFESSIONAL IS HIGHLY RECOMMENDED.

• A Factory Service Manual for your specific Year / Make / Model is highly recommended for reference

during installation.

• All lifted vehicles may require additional driveline modifications and / or balancing.

• A vehicle alignment is REQUIRED after installation of this product.

• Speedometer / Computer recalibration is required if changing +/- 10% from factory tire diameter.

• A vehicle lift or hoist greatly reduces installation time. Installation time estimates are based on an avail-

able vehicle hoist.

COMPONENTS

DESCRIPTION QTY

COIL SPRING FRONT PAIR 6" 1

DROP PITMAN ARM 1

CASTER BUSHING KIT 1

TRACK BAR BRACKET 1

TRACK BAR WASHER 2

FRONT BUMP STOP EXTENSION 2

FRONT SWAY BAR DROP, LEFT SIDE 1

FRONT SWAY BAR DROP, RIGHT SIDE 1

STEERING STABILIZER BRACKET (TIE ROD) 1

STEERING STABLIZER BRACKET (FRAME) 1

STEERING STABILIZER CONE WASHER 1

STEERING STABILIZER 1

BRAKE LINE BRACKET, LEFT 1

BRAKE LINE BRACKET, RIGHT 1

RADIUS ARM DROP CRUSH SLEEVE 2

RADIUS ARM DROP NUT PLT, LEFT 1

RADIUS ARM DROP NUT PLT, RIGHT 1

RADIUS ARM DROP BRACKET, LEFT 1

RADIUS ARM DROP BRACKET, RIGHT 1

REAR BLOCK, LEFT (DRIVER) 1

REAR BLOCK, RIGHT (PASSENGER) 1

U-BOLT 4

U-BOLT HARDWARE PACK 1

CARRIER DROP 1

FALCON FRONT SHOCKS 2

FALCON REAR SHOCKS 2

SHOCK SPACER 2

2023 FSD HUB VACUUM LINE, KIT 1

HARDWARE PACK 1

HARDWARE

DESCRIPTION QTY

Brake Line

M8-1.25 x 20mm HHB, Class 10.9, YZ 2

M8-1.25 C-Lock Nut, Class 10.9 2

M8 Flat Washer Class 10.9 4

Carrier Bearing

7/16"- 14 x 2.25" HHB (GR8) 2

7/16 Flat Washer (GR8) 2

Sway Bar Drop

M10-1.5 X 40mm HHB, Class 10.9, YZ 4

M10-1.5 C-Lock Nut, Class 10.9 4

M10 Flat Washer Class 10.9 8

Bump Stop

M8-1 C-Lock Nut(GR 10.9) 2

M8 Flat Washer (GR 8.8) 2

Steering Stabilizer

M12 - 1.75 x 70 mm HHB GR 10.9 2

M12 - 1.75 x 55 mm HHB GR 10.9 1

M12 - 1.75 x 35 mm HHB GR 10.9 3

M12 - 1.75 C-Lock Nut GR 10.9 3

M12 Flat Washer GR 10.9 6

Radius Arm Drop

M18(2.50) X 130 GR HHB 10.9 2

M18(2.50) X 40 HHB GR 10.9 2

M18(2.50) Lock Nut , CLASS 10 2

M18 Flat Washer 6

M18 Split Lock washer 2

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***Parts shown in red for picture clarification only***

ReadyLIFT recommends all steps and procedures described in these instructions be

performed while the vehicle is properly supported on a two post vehicle lift with safe-

ty jacks.

Otherwise, park vehicle on a clean flat surface and block the rear wheels for safety.

Engage the parking brake.

Disconnect the vehicle power source at the ground terminal on the battery.

Lock the steering wheel in the straight forward position with the column lock or steer-

ing wheel locking device.

Raise the front of the vehicle and support with safety jack stands at each frame rail

behind the lower control arms.

Remove front wheels/tires using care to prevent personal injury - wheel/tire assembly

is very heavy.

Remove the brake line bracket at the

frame.

Retain the factory hardware.

Remove the brake line bracket at the axle.

Retain the factory hardware.

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Remove the vacuum line clips from the

driver side radius arm.

Remove the axle vent line tube from the

top of the driver side shock and the inside

frame rail.

Remove the vacuum line clip from the

passenger side engine cross member.

Mark the drive shaft to pinion orientation,

then remove the drive shaft from the front

differential. Tape the u joint caps to keep

them from falling off / damage while

working.

Retain the factory hardware.

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Remove the transfer case skid plate.

Retain the factory hardware.

NOTE: THIS IS NOT A NECESSARY STEP BUT

MAY AID IN THE INSTALLATION PROCESS.

eave the axle hanging from the shocks.

Place a suitable jack under the tie rod

ends close to the knuckles.

Remove the radius arms at the frame. Re-

tain factory hardware.

Use the jack to rotate the axle up allowing

the radius arms to drop out of the frame

low enough to clear the ReadyLIFT radius

arm drops.

Insert the radius arm drop down brackets

into the mounting pocket.

Secure the radius arm drop down bracket

using the supplied 18mm X 130mm bolts,

sleeves and hardware.

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Slide the nutplate, into the frame. Using

the supplied 18mm X 40mm bolts, washer

and split washer, Install the bolt through

the radius arm drop bracket, rear cross-

member and nutplate.

Torque the M18 hardware to 250 ft-lb.

Carefully raise the radius arm into the

drop bracket and secure it using the pre-

viously removed OE hardware.

Do not tighten at this point.

Remove the jacks from under the tie rod

ends and place under the axle.

Remove the sway bar from the frame and

let hang.

Retain the factory hardware.

18mm x 40mm, split

washer, nut plate

OE hardware

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Remove the factory bump stop by grab-

bing and pulling it out of its mount using a

twisting/pulling motion.

Retain the factory bump stop.

Remove the bump stop mount from the

frame.

Discard the factory hardware.

Install the ReadyLIFT bump stop exten-

sion to the frame by threading it into the

existing bolt hole. Use a punch or similar

tool in the holes of the mount and tighten.

Install the bump stop mount to the exten-

sion using M8 nut and washer.

Mark a line across the edge of the outer

lip of the passenger side bump stop

mount parallel to the frame.

Remove the passenger side bump stop

mount and use a suitable cutting device,

trim off the marked edge. This is for

spring clearance under suspension full

droop and articulation. Paint the exposed

metal with a quality rust preventative

paint.

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Using the supplied M8 locking nut and

washer, Install bump stop mount to the

ReadyLIFT extension making sure the cut

edge faces to the inside of the vehicle.

Torque the nut to 5 ft-lbs.

Install the factory bump stop into the cup

in a factory orientation.

Remove the track bar at the track bar

bracket. Let hang out of the way.

Retain the factory hardware.

Remove the steering stabilizer from the

frame.

Discard the factory hardware.

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Remove the steering stabilizer nut from

the tie rod. Use an air hammer or other

suitable device to dislodge the taper.

Remove the tie rod end at the pitman

arm. Strike the pitman arm with a dead

blow hammer to dislodge the taper.

Retain the factory hardware.

Remove the factory track bar bracket by

removing the 2 vertical bolts and 3 hori-

zontal nuts.

Retain the factory hardware.

Remove the pitman arm nut. Using a pit-

man arm puller, remove the pitman arm

from the steering gear box.

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Clean off any debris off the sector shaft.

Coat the sector shaft splines with a light

duty liquid based lubricant or oil.

Install the drop pitman arm using the fac-

tory nut. Remove the nut, and clean off

any lubricant from the sector shaft and

pitman arm nut threads and apply a liberal

amount of thread locker. Run tight. Use a

chain or other suitable strap through the

pitman arm tie rod mounting hole to the

passenger side frame rail to keep gear box

from turning.

Torque the pitman arm nut to 450 ft-lbs.

Remove the shock from the axle.

Retain the factory hardware.

Lower the axle enough to remove the

front springs. Remove the shock from the

frame.

Discard the factory shocks and

springs.

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Install the ReadyLIFT track bar mount to

the frame using factory hardware.

Torque the factory hardware to 120 ft-lbs.

Install the track bar into the ReadyLIFT

track bar mount using the factory hard-

ware and the ReadyLIFT offset square

washers. Make sure the offset is closest to

the driver side, as shown.

Loosen the tie rod adjuster and flip the tie

rod 180 degrees and install to the Ready-

LIFT pitman arm using factory hardware.

Torque the nut to 70 ft-lbs.

Install the safety keeper and cotter pin.

Install the factory isolator onto the provid-

ed lift springs, and then the springs onto

the axle making sure to clock the dead

end of the spring into the spring lock.

Raise the axle enough to hold the springs

into place.

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Install the Falcon Front Shock using the

provided hardware on the top.

Torque the upper shock hardware to 35 ft

-lbs.

Using the factory hardware on the bot-

tom, install into the lower shock perch.

Do not torque at this time.

Install the ReadyLIFT steering stabilizer

bracket to the frame using M12 x 35mm

bolt and washer. Do not tighten until the

stabilizer has been test fit so as to estab-

lish the brackets final orientation.

Install the ReadyLIFT steering stabilizer

bracket to the tie rod using M12 x 55mm

bolt, washers, cone adapter, and nut.

Cone adapter will install from the bottom

going up. Do not tighten at this time. The

stabilizer must be test fit to establish the

bracket's final orientation.

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Install the steering stabilizer to the brack-

ets using M12 x 70mm bolts, washers,

and nuts. Mark the orientation of the

brackets to the tie rod end and frame

mount. Remove the stabilizer.

Torque the mount hardware to 45 ft-lbs.

Reinstall the steering stabilizer and torque

hardware to 45 ft-lbs.

Remove the barb connector from vacuum

line elbow.

Install the fir tree cable tie into the radius.

Install the supplied barbed coupler and

vacuum line in between the factory line

and the elbow.

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Zip tie the driver side vacuum line to the

vent tube making sure that it can not be

pinched by the bump stop when the sus-

pension cycles.

Install the brake line extensions into the

factory bracket location using the factory

bolt.

Torque the bolt to 5 ft-lbs.

Do not over tighten and strip the

threads.

Gently pull down on the metal line until

you can get the bracket to line up with the

bottom two holes on the brake line drop.

Ensure to not kink the metal line.

Install the factory brackets using M8 x

20mm bolts, washers, and nuts. Install

bolts facing inward.

Torque the M8 hardware to 10 ft-lbs.

Install the sway bar drop brackets onto

the frame using factory hardware.

Torque the factory nuts to 45 ft-lbs.

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Install sway bar to brackets using provid-

ed M10 x 40mm bolt, washer and locking

nut.

Torque the M10 hardware to 45 ft-lbs.

Install the front wheels. Lower the vehicle to the ground. Torque the lug nuts to the

wheel manufacturers specs. Jounce the vehicle a few times to settle it to the new ride

height. Install the front drive shaft using the factory hardware with a drop of thread

locker. Torque to 26 ft-lbs, the lower shock hardware to 65 ft-lbs, the radius arm

hardware to 200 ft-lbs, track bar at the bracket to 350 ft-lbs.

Block the front tires and raise the rear of the vehicle using a suitable jack. Support

with jack stands at each frame rail in front of the rear leaf spring hangers.

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Support the axle with a suitable jack. Re-

move the rear shocks from the axle and

frame. Retain factory hardware.

Loosen but do not remove the passenger

side u-bolts. Remove the driver side u-

bolts completely and lower the axle.

Install the ReadyLIFT driver side block (D

is cut into the block under the bump stop

tang) and raise the axle lining the center

pins up. Install using the provided u-bolts

and nuts but do not fully tighten at this

time. Repeat steps for the passenger side.

(P is cut into the block under the bump

stop tang)

Install aftermarket rear shock using facto-

ry hardware. Do not tighten at this time.

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If equipped with a 2 piece driveline, re-

move the bolts holding the carrier bearing

to the frame. Install the ReadyLIFT carrier

bearing spacer between the carrier bear-

ing and frame using 7/16” bolts, washers

and a drop of thread locker. Torque to 50

ft-lbs.

Install the wheels and lower the vehicle to the ground.

Torque the lug nuts to the wheel manufacturers specs. Jounce the vehicle to settle it

to the new ride height. Torque the shock hardware to 65 ft-lbs, and the u-bolts to 110

ft-lbs.

Reconnect the vehicle power source at the ground terminal on both batteries. Adjust

steering wheel center and toe before driving or you could have dash warning lights

come on.

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ReadyLIFT 6" COIL SPRING LIFT KIT Operating instructions

ReadyLIFT 6" COIL SPRING LIFT KIT Operating instructions

ReadyLIFT 6" COIL SPRING LIFT KIT Operating instructions

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